Dexter h



UNITED STATES PATENT OFFICE.

DEXTER H. CHAMBERLAIN, OF BOSTON, MASSACHUSETTS, ASSIGNOR TO WM. R.

MESHURUL.

LARD-LAMP.

Secification of Letters Patent N 0.

To all whom it may concern:

Be it known that I, DEXTER H. CHAMBER- LAIN, of Boston, in the county ofSuffolk and State of Massachusetts, have invented a new or Improved Lampfor Burning Lard or other Fatty Matters that, Like It, Pass from a Fluidto a Solid State; and I do hereby declare that my said invention isfully described and represented in the following specification and theaccompanying drawings, letters, figures, and references thereof.

Of the said drawings Figure 1, denotes a side elevation of my improvedlamp. Fig. 2, is a longitudinal and vertical section of it. Fig. 3, is atransverse and vertical section of it.

In these figures A, represents the reser voir for holding the lard orcombustible matter. It is provided with two centers or journals, a, b,which are respectively supported on the tines, c, d, of a bifurcatedstand, 13. One of these journals is provided with a set screw and nut(as seen at D,) by which the reservoir or fountain, A, when turned onits ournals can be fastened in any desirable position, between the twoextreme positions denoted by dotted lines M, N, in Fig. 2.

Important parts of my invention are those features or devices by whichthe lamp fountain it rendered capable of being turned on the stand andfixed in position as set forth. The wick tubes are so arranged that theyare not directly over the common axis of the two journals, when they arein position as seen at M, but they are disposed aside from such axis orjournals and essentially as represented at F, in the drawings. hen byturning the lamp fountain they are depressed toward the position, N, thecombustible contents of the lamp if in a fluid state will run toward thesaid tubes, and if immediately after the flame of the wick has been putout, the lamp fountain is turned down so as to .bring the lower end ofthe tubes into level with or in close proximity with or somewhat belowthe level of the top surface 11,633, dated August 29, 1854.

of the fluid, such fluid as it concretes will remain in such a relationto the wick tubes that Whenever it may be desirable to relight or againenfiame the wicks, heat of the flame will be conducted by the tubesdirectly into the concreted mass of lard or combustible matter and willmelt it, so as to cause the wicks by capillary attraction to elevate itto the flame.

Soon after the wick has been lighted and the concrete fatty matter inthe immediate vicinity ofthe wick tubes has been melted, the lampfountain may be turned so as to carry the wick tubes above the levelwhich the top surface of the lard or fatty matters would attain when itshould become entirely fluid. After this should it be desirable todepress the wick tubes so as to bring the top surface of the fluid incloser relation with them, we have only to rotate the fountain to theextent required and to clamp it in position by its clamp screw or nut.

\Vith a lamp constructed in the above manner, there is no necessity ofcopper or metallic conductors, extending down from the wick tubes intothe fountain for the purpose of conveyin heat down into the lard for thepurpose of it liquified While the lamp is lighted.

I claim- The above described improved lamp (for burning lard or concretefatty matters) made with an arrangement of the wick tubes, the lardreservoir, and the supporting bifurcated stand as described, and withthe reservoir applied to the stand so as to turn on centers and befastened in position under any inclination or elevation of the wicktubes as specified.

In testimony whereof I have hereunto set my signature this seventeenthday of May A. D. 1854.

DEXTER H. CHAMBERLAIN.

Witnesses:

R. H. EDDY, F. P. HALE, Jr.

liquefying it, and keeping

